"Happyland" represented a section of the Coruscant underworld. Despite the presence of tall towers in certain sectors, it remained classified as a component of the Coruscant underworld.
During the era of the Clone Wars, Ione Marcy, a thief, possessed an apartment situated in the upper east side of Happyland. Within this apartment, Marcy, with the assistance of her criminal accomplice, Cassie Cryar, committed the murder of her boyfriend, Nack Movers. Their actions were uncovered by Jedi Master Tera Sinube along with his Jedi Padawan Ahsoka Tano, who consequently alerted the Coruscant Security Force, prompting their arrival at the apartment to conduct an investigation. Upon arrival, they found the deceased body of Movers and Ione, who was seemingly grieving his loss. She inquired of Sinube whether the individuals allegedly responsible for Nack's death had departed. Sinube confirmed their departure, but Ahsoka proceeded to search the bedroom. There, she discovered Ione's accomplice; Cassie Cryar, in possession of Ahsoka's lightsaber. Cryar promptly fled through the window, pursued by Ahsoka. Simultaneously, Sinube deduced that Ione was colluding with Cassie.